Patent · US Active

Process for obtaining carbon black powder with reduced sulfur content

US9410042B2 · kind B2 · utility

1Cited by

83References

12Claims

0Family size

Assignee

ADITYA BIRLA SCIENCE AND TECHNOLOGY COMPANY PVT. LTD. · IN

Inventors

Sandeep Vasant Chavan · Mumbai, IN
Harshad Ravindra Kini · Mumbai, IN
Shobhit Gupta · San Francisco, US

Key dates

Filing date	Mar 28, 2013
Grant date	Aug 9, 2016
Priority date	—
Expiry date	Mar 28, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2006/80
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present disclosure relates to a process for obtaining carbon black powder with a sulfur content of less than 0.07%. The process includes step of reacting carbon black powder with a sulfur content of 1-2% with an alkali metal or salt thereof, in a fluid media, at a temperature in the range of 100° C. to 350° C. and pressure in the range of 10 to 500 psig. It is found that in accordance with the process of the present disclosure, the sulfur content was reduced substantially from that of about 1.25% to that of 0.05%, resulting in about 96% desulfurization.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.